README.md in muffin_man-2.4.7 vs README.md in muffin_man-2.4.8

@@ -4,9 +4,10 @@
 
 MuffinMan is a ruby interface to the Amazon Selling Partner API. For more information on registering to use the Selling Partner API, see [Amazon's documentation](https://github.com/amzn/selling-partner-api-docs/blob/main/guides/en-US/developer-guide/SellingPartnerApiDeveloperGuide.md)
 
 As of now, this gem only supports portions of the following APIs with more to come:
 
+- `Customer Feedback Insights API v2024-06-01 (BETA)`
 - `Amazon Warehousing and Distribution API v2024-05-09`
 - `Catalog Items API v2022-04-01`
 - `Data Kiosk API v2023-11-15`
 - `FBA Inventory API v1`
 - `Feeds API v2021-06-30`